Refs Tokutek/ft-index#28  Use prctl (on any linux) even if it is too old for PR_SET_PTRACER.
Ignore any error caused by this
Initial commit of fast point queries. Needs cleanup.
No more embedded tokutxn struct. This keeps the changeset smaller.
Finish removing txn stuff
refs #5770 Only check one basement node on pin, remove the assumption that adjacent
available nodes are query-able.
Fix parameter
Remove dead code
This shouldn't be here
Merge branch 'checkonebn' of github.com:Tokutek/ft-index into checkonebn